Leonardo DiCaprioOnce "king of the world," this star often flies commercially and drives himself around in a hybrid Toyota Prius. In 1998, he started the
Leonardo DiCaprio Foundation to promote environmental causes. More recently, he's been working on 11th Hour, an environmental documentary featuring interviews with global green leaders.
Cameron DiazThis bombshell drives a hybrid car, got trained to give Al Gore's climate presentation, and helped make the
big announcement about Live Earth.
Robert RedfordThe Sundance Kid has
campaigned for Utah wilderness,
promoted solar energy,
convinced mayors to tackle climate change, and served 30 years on the board of the Natural Resources Defense Council. In April, he
launched a weekly three-hour slot of
eco-programming on his Sundance TV channel.
Cate BlanchettCate Blanchett and her playwright hubby have converted their own home to solar power. As co-artistic directors of the Sydney Theatre Company, the duo also plans to
green that venture and hope to power an entire theatre season off-grid.
George ClooneyThis leading man not only earned an Oscar last year but also a prime spot on the cover of Vanity Fair's first green issue. In association with his award-winning role in Syriana, Clooney launched
Oil Change, a campaign to say good night and good luck to America's dependence on oil. And to drive the point home, he's frequently seen out and about with his eco-friendly Tango electric car.
Ed Begley Jr.We are head over heels for this electric-car-driving, solar-powered-home-owning star. He's got his own brand of eco-cleaners (
Begley's Best), a reality show that puts a domestic spin on green issues (
Living with Ed), and a morning routine that involves powering his toaster with a stationary bike.
Edward NortonThe eco-commitment of this Hollywood heavyweight is no illusion. Norton used his star power to help launch BP's
Solar Neighbors Program, which gets solar panels onto low-income homes in L.A., and he hosted an award-winning, four-part National Geographic TV special about the unnerving effects of global environmental problems.
Daryl HannahArrested last year for staging a 23-day tree-sit in a bid to save L.A.'s South Central Farm, an urban community garden, this steel magnolia is a longtime environmentalist who drives a biodiesel car and runs her green home on solar power. Hannah has also recently made a splash online with the eco-video blog
dh love life.
Amitabh BachchanConcerned about his native India's vulnerability to climate change, this top Bollywood star helped launch a partnership between Global Cool and the International Indian Film Academy to use the power of cinema to build awareness of the issue.
Julia Louis-DreyfusShe may be starring in The New Adventures of Old Christine, but being a devout environmentalist is nothing new for Louis-Dreyfus. Her
solar-powered home is a showcase of green design and energy efficiency, and she's long been active with organizations like Heal the Bay, the Natural Resources Defense Council, and the Trust for Public Land.
Pierce BrosnanThe world is enough for this 007, who focuses
his activism on the planet -- marine mammals and wetland protection in particular. Brosnan -- who was named "Best-Dressed Environmentalist" in 2004 and serves on the board of the Environmental Media Association -- has long fought for dolphin-safe tuna rules and protested the U.S. Navy's widespread use of sonar, which can harm whales and other cetaceans.
Rosario DawsonThough she's soon to reprise her Sin City role, Dawson's environmental involvement leans more toward the virtuous. In 2005, she brought her star power to
a U.N. summit on preserving the environment and ending poverty, and, more recently, she's dialed up her work with
Global Cool's mobile texting campaign, which steers money to clean energy and energy-reduction projects.
Will FerrellHe is an active supporter of the Natural Resources Defense Council, and, though it may sound stranger than fiction, he'll soon be driving his electric car into the driveway of an eco-friendly home.
Tom HanksAn avid supporter and volunteer for The Nature Conservancy, this Forrest had the gumption to order the very first
eBox electric car, delivered earlier this year. And Hanks often goes the extra green mile to make mention of his environmental leanings when he makes major TV appearances.
Brad PittTwice named "Sexiest Man Alive" by People magazine, Pitt isn't just a pretty face. A major architecture buff, he's been hot on the trail of the emerging green-building movement, helping with efforts to rebuild New Orleans in an eco-friendly way,
narrating a sustainable design TV series, and
supporting Ed Norton's Solar Neighbors Program.